I finished the first eight chapters on the train, and am enjoying meeting the characters all over again. But, I've been spoiled by the film because I actually see the actors in the roles. This is not a bad thing at all, by the way. The cast of the film seemed to really "get" the characters so far. What the film does not tell us is Tom's backstory. In the book this tries to make so much more sense (except,(show spoiler)
There is only one character I would like to make special mention of: Matt Damon's Tom Ripley's swimming trunks.
If you read Chapter 7 you will see my concern.